Cummins fuel injection pump 3973228 4307021 QSL8.9 fuel pump ISL8.9 fuel pump SAA6D114 engine parts excavator fuel pump replacement

◆ Product Overview
A high-performance fuel injection pump engineered for Cummins QSL8.9 and ISL8.9 series diesel engines, and also compatible with certain Komatsu SAA6D114 excavator engine applications. This direct OEM replacement for part numbers 3973228 and 4307021 ensures precise fuel delivery, optimal combustion, and reliable power restoration in heavy-duty industrial and construction machinery.

◆ OEM Part Numbers
✓ 3973228
✓ 4307021

◆ Compatible Engine Series
✓ Cummins QSL8.9 Engine
✓ Cummins ISL8.9 Engine
✓ Cummins ISC / QSC (Verify specific model compatibility)
✓ Komatsu SAA6D114 Engine (Specific configurations)

◆ Product Specifications
✓ Condition: 100% New or Premium Remanufactured (As Specified)
✓ Type: High-Pressure Fuel Injection Pump
✓ Application: Industrial, Generator, & Excavator Diesel Engines
✓ Calibration: Pre-set to meet OEM specifications for power, torque, and emissions.

◆ Key Features
✓ Direct OEM Replacement: Exact fit for Cummins QSL8.9/ISL8.9 engines and cross-compatible with specific Komatsu SAA6D114 units.
✓ Precision Fuel Metering: Delivers accurate fuel quantity and injection timing for maximum engine efficiency and performance.
✓ Robust Construction: Built to withstand high injection pressures and the demanding cycles of excavator and industrial use.
✓ Performance Restoration: Effectively resolves power loss, excessive smoke, poor fuel economy, and hard starting.

◆ Quality Assurance
✓ Performance Tested: Each pump is bench-tested to verify flow rates, pressure output, and governor function.
✓ Leak & Durability Tested: All seals and internal components are validated for integrity under pressure.
✓ Calibration Verified: Set to original equipment specifications to ensure proper engine operation.

◆ Installation Applications
✓ Replacement of failed or underperforming injection pumps on Cummins QSL8.9/ISL8.9 industrial engines.
✓ Fuel system overhaul for Komatsu excavators using the compatible SAA6D114 engine.
✓ Correction of engine performance issues in generator sets, pumps, and other heavy equipment.
✓ Preventive maintenance to ensure reliability and avoid costly unplanned downtime.

◆ Service Advantages
✓ Restores Rated Power & Torque: Returns equipment to its full operational capability.
✓ Improves Operational Efficiency: Optimal fuel delivery translates to better fuel economy and lower operating costs.
✓ Ensures System Reliability: A high-quality pump protects other fuel system components from damage.
✓ Versatile Application: Serves both Cummins industrial and compatible Komatsu excavator platforms.